David is principal of a consultancy on strategy and human change for environmental sustainability and is also currently project managing a substantial industry : university joint project to encourage the industrial adoption of low carbon technologies.

David has a strong background in business having spent his early career in increasingly senior roles in Finance, Strategy and Marketing with the Royal Mail, Esso Europe Inc. and THORN EMI. On leaving THORN he worked as an Environmental Consultant until 1995. He was then invited to become a Director of Bath Consultancy Group, one of the UK's most respected organisational learning and strategic change consultancies. Here he deepened his ability to work with complex human responses to environmental issues.

Since 1998, David has devoted his professional life to the challenge of sustainable development, with a particular interest in human responses to issues such as climate change. As a sustainability consultant, he worked for several years for one of the UK's leading construction companies and is now widely in demand for leading edge work on behavioural change. He is also a Visiting Fellow at the University of Bath, where he teaches on its innovative MSc in Responsibility and Business Practice.